CA2405262A1 - System for scrambling content, and system for descrambling scrambled content - Google Patents

System for scrambling content, and system for descrambling scrambled content Download PDF

Info

Publication number
CA2405262A1
CA2405262A1 CA002405262A CA2405262A CA2405262A1 CA 2405262 A1 CA2405262 A1 CA 2405262A1 CA 002405262 A CA002405262 A CA 002405262A CA 2405262 A CA2405262 A CA 2405262A CA 2405262 A1 CA2405262 A1 CA 2405262A1
Authority
CA
Canada
Prior art keywords
content
algorithm
sections
scrambled
unscrambled
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
CA002405262A
Other languages
English (en)
French (fr)
Inventor
Andrew Augustine Wajs
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Irdeto Access BV
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2405262A1 publication Critical patent/CA2405262A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/913—Television signal processing therefor for scrambling ; for copy protection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream decryption
    • H04N21/44055—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream decryption by partially decrypting, e.g. decrypting a video stream that has been partially encrypted
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/4408—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream encryption, e.g. re-encrypting a decrypted video stream for redistribution in a home network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
    • H04N21/4623—Processing of entitlement messages, e.g. ECM [Entitlement Control Message] or EMM [Entitlement Management Message]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
    • H04N7/1675—Providing digital key or authorisation information for generation or regeneration of the scrambling sequence
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/913—Television signal processing therefor for scrambling ; for copy protection
    • H04N2005/91357—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal
    • H04N2005/91364—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal the video signal being scrambled

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Computer Security & Cryptography (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
CA002405262A 2000-04-07 2001-03-20 System for scrambling content, and system for descrambling scrambled content Abandoned CA2405262A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
EP00201276 2000-04-07
EP00201276.3 2000-04-07
EP00204019.4 2000-11-15
EP00204019 2000-11-15
PCT/EP2001/003184 WO2001078386A2 (en) 2000-04-07 2001-03-20 Data scrambling and descrambling system

Publications (1)

Publication Number Publication Date
CA2405262A1 true CA2405262A1 (en) 2001-10-18

Family

ID=26072102

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002405262A Abandoned CA2405262A1 (en) 2000-04-07 2001-03-20 System for scrambling content, and system for descrambling scrambled content

Country Status (10)

Country Link
EP (1) EP1290877B1 (pt)
JP (1) JP2003530784A (pt)
CN (1) CN1422492A (pt)
AU (2) AU2001262118B2 (pt)
BR (1) BR0109857A (pt)
CA (1) CA2405262A1 (pt)
DE (1) DE60140740D1 (pt)
HK (1) HK1054290A1 (pt)
MX (1) MXPA02009820A (pt)
WO (1) WO2001078386A2 (pt)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7895616B2 (en) 2001-06-06 2011-02-22 Sony Corporation Reconstitution of program streams split across multiple packet identifiers
US7127619B2 (en) 2001-06-06 2006-10-24 Sony Corporation Decoding and decryption of partially encrypted information
US7765567B2 (en) 2002-01-02 2010-07-27 Sony Corporation Content replacement by PID mapping
US7548984B2 (en) * 2002-05-27 2009-06-16 Panasonic Corporation Stream distribution system, stream server device, cache server device, stream record/playback device, related methods and computer programs
FR2848372B1 (fr) * 2002-12-09 2005-04-01 Medialive Synchronisation de flux audiovisuels securises
EP1440622B1 (en) * 2003-01-27 2014-03-05 Nestec S.A. Use of expanded constituents and manufacture of products therefrom
JP5606676B2 (ja) * 2005-06-23 2014-10-15 パナソニック・アビオニクス・コーポレイション サーチ可能なデータ伝送ストリーム暗号化を提供するためのシステムおよび方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0186210B1 (ko) * 1995-11-10 1999-04-15 구자홍 디지탈 데이터의 저작권 보호와 변속 재생을 위한 자기 기록 테이프의 기록방법

Also Published As

Publication number Publication date
MXPA02009820A (es) 2003-03-27
AU6211801A (en) 2001-10-23
WO2001078386A2 (en) 2001-10-18
WO2001078386A3 (en) 2002-12-12
DE60140740D1 (pt) 2010-01-21
CN1422492A (zh) 2003-06-04
BR0109857A (pt) 2003-07-15
JP2003530784A (ja) 2003-10-14
AU2001262118B2 (en) 2004-03-11
EP1290877A2 (en) 2003-03-12
EP1290877B1 (en) 2009-12-09
HK1054290A1 (zh) 2003-11-21

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Legal Events

Date Code Title Description
FZDE Discontinued
FZDE Discontinued

Effective date: 20060320